Jason Nishiyama
@evilscientistca.bsky.social
Teacher, astronomer, political scientist and father. I wrote a book once: http://evl.link/df
Alberta, Canada
Alberta, Canada
NGC 4647 (smaller of the two galaxies at centre) is a spiral galaxy located about 57 Mly away in the constellation of Virgo.
It seems to be starting to interact with M60 (larger of the two) which is only about 600 kly away from it. #astronomy
It seems to be starting to interact with M60 (larger of the two) which is only about 600 kly away from it. #astronomy
November 14, 2025 at 1:11 AM
NGC 4647 (smaller of the two galaxies at centre) is a spiral galaxy located about 57 Mly away in the constellation of Virgo.
It seems to be starting to interact with M60 (larger of the two) which is only about 600 kly away from it. #astronomy
It seems to be starting to interact with M60 (larger of the two) which is only about 600 kly away from it. #astronomy
NGC 3384 (galaxy at top of triangle of galaxies) is an elliptical galaxy located about 35 Mly away in the constellation of Leo.
As with most elliptical galaxies, NGC 3384 is made up of mostly older Population II stars. These stars are cool red stars that have very long lives. #astronomy
As with most elliptical galaxies, NGC 3384 is made up of mostly older Population II stars. These stars are cool red stars that have very long lives. #astronomy
November 13, 2025 at 12:52 AM
NGC 3384 (galaxy at top of triangle of galaxies) is an elliptical galaxy located about 35 Mly away in the constellation of Leo.
As with most elliptical galaxies, NGC 3384 is made up of mostly older Population II stars. These stars are cool red stars that have very long lives. #astronomy
As with most elliptical galaxies, NGC 3384 is made up of mostly older Population II stars. These stars are cool red stars that have very long lives. #astronomy
108 is a barred spiral galaxy located about 46 Mly away in the constellation of Ursa Major.
It has been observed to have over 200 globular clusters in orbit about it. #astronomy
It has been observed to have over 200 globular clusters in orbit about it. #astronomy
November 10, 2025 at 11:34 PM
108 is a barred spiral galaxy located about 46 Mly away in the constellation of Ursa Major.
It has been observed to have over 200 globular clusters in orbit about it. #astronomy
It has been observed to have over 200 globular clusters in orbit about it. #astronomy
Saturn is the 6th planet in our solar system, famed for it's spectacular ring system.
As the rings are inclined to the plane of Saturn's orbit, we see them at different angles through the years. Here we see the change from 2019 (L) to 2025 (R). #astronomy
As the rings are inclined to the plane of Saturn's orbit, we see them at different angles through the years. Here we see the change from 2019 (L) to 2025 (R). #astronomy
November 6, 2025 at 11:10 PM
Saturn is the 6th planet in our solar system, famed for it's spectacular ring system.
As the rings are inclined to the plane of Saturn's orbit, we see them at different angles through the years. Here we see the change from 2019 (L) to 2025 (R). #astronomy
As the rings are inclined to the plane of Saturn's orbit, we see them at different angles through the years. Here we see the change from 2019 (L) to 2025 (R). #astronomy
Mars is the fourth planet from the Sun in our solar system.
It's red appearance is due to a large amount of iron oxide dust on its surface. #astronomy
It's red appearance is due to a large amount of iron oxide dust on its surface. #astronomy
November 5, 2025 at 10:47 PM
Mars is the fourth planet from the Sun in our solar system.
It's red appearance is due to a large amount of iron oxide dust on its surface. #astronomy
It's red appearance is due to a large amount of iron oxide dust on its surface. #astronomy
M41 is an open cluster located about 2400 ly away in the constellation of Canis Major.
Open clusters are great natural laboratories for stellar evolution. Since the stars were formed roughly at the same time, we can see how different stars evolve over time. #astronomy
Open clusters are great natural laboratories for stellar evolution. Since the stars were formed roughly at the same time, we can see how different stars evolve over time. #astronomy
November 5, 2025 at 1:32 AM
M41 is an open cluster located about 2400 ly away in the constellation of Canis Major.
Open clusters are great natural laboratories for stellar evolution. Since the stars were formed roughly at the same time, we can see how different stars evolve over time. #astronomy
Open clusters are great natural laboratories for stellar evolution. Since the stars were formed roughly at the same time, we can see how different stars evolve over time. #astronomy
M60 (bright galaxy centre) is an elliptical galaxy located about 56.7 Mly away in the constellation of Virgo.
It is one of the brightest galaxy in the Virgo cluster.
The smaller spiral galaxy beside it is NGC 4647. The pair are listed as Arp 116 in the Atlas of Peculiar Galaxies. #astronomy
It is one of the brightest galaxy in the Virgo cluster.
The smaller spiral galaxy beside it is NGC 4647. The pair are listed as Arp 116 in the Atlas of Peculiar Galaxies. #astronomy
November 3, 2025 at 10:48 PM
M60 (bright galaxy centre) is an elliptical galaxy located about 56.7 Mly away in the constellation of Virgo.
It is one of the brightest galaxy in the Virgo cluster.
The smaller spiral galaxy beside it is NGC 4647. The pair are listed as Arp 116 in the Atlas of Peculiar Galaxies. #astronomy
It is one of the brightest galaxy in the Virgo cluster.
The smaller spiral galaxy beside it is NGC 4647. The pair are listed as Arp 116 in the Atlas of Peculiar Galaxies. #astronomy
M27, the Dumbbell Nebula is a planetary nebula located about 1250 ly away in the constellation of Vulpecula.
A type of dying star, M27 was the first planetary nebula discovered, in 1764, by Charles Messier; though what it was wasn't known at that time. #astronomy
A type of dying star, M27 was the first planetary nebula discovered, in 1764, by Charles Messier; though what it was wasn't known at that time. #astronomy
October 31, 2025 at 12:19 AM
M27, the Dumbbell Nebula is a planetary nebula located about 1250 ly away in the constellation of Vulpecula.
A type of dying star, M27 was the first planetary nebula discovered, in 1764, by Charles Messier; though what it was wasn't known at that time. #astronomy
A type of dying star, M27 was the first planetary nebula discovered, in 1764, by Charles Messier; though what it was wasn't known at that time. #astronomy
Some bling from the PMO.
October 31, 2025 at 12:04 AM
Some bling from the PMO.
By tracking the telescope at the sidereal rate (with the Earth's rotation) and taking a photo every minute as the Moon moved through the following image was made staking the images.
This was during a lunar eclipse. The resulting photo shows the Earth's shadow. #astronomy
This was during a lunar eclipse. The resulting photo shows the Earth's shadow. #astronomy
October 30, 2025 at 1:15 AM
By tracking the telescope at the sidereal rate (with the Earth's rotation) and taking a photo every minute as the Moon moved through the following image was made staking the images.
This was during a lunar eclipse. The resulting photo shows the Earth's shadow. #astronomy
This was during a lunar eclipse. The resulting photo shows the Earth's shadow. #astronomy
NGC 2903 is a barred spiral galaxy located about 30 Mly away in the constellation of Leo.
It is a field galaxy, that is not directly associated with a cluster or group. That being said it is a member of the Virgo supercluster of galaxies. #astronomy
It is a field galaxy, that is not directly associated with a cluster or group. That being said it is a member of the Virgo supercluster of galaxies. #astronomy
October 29, 2025 at 1:45 AM
NGC 2903 is a barred spiral galaxy located about 30 Mly away in the constellation of Leo.
It is a field galaxy, that is not directly associated with a cluster or group. That being said it is a member of the Virgo supercluster of galaxies. #astronomy
It is a field galaxy, that is not directly associated with a cluster or group. That being said it is a member of the Virgo supercluster of galaxies. #astronomy
M96 is a spiral galax located about 31 Mly away in the constellation of Leo.
It is about the same mass as size as our own Milky Way Galaxy. #astronomy
It is about the same mass as size as our own Milky Way Galaxy. #astronomy
October 28, 2025 at 12:21 AM
M96 is a spiral galax located about 31 Mly away in the constellation of Leo.
It is about the same mass as size as our own Milky Way Galaxy. #astronomy
It is about the same mass as size as our own Milky Way Galaxy. #astronomy
M33 is a spiral galaxy located about 3.2 Mly away in the constellation of Triangulum.
M33 is the third large spiral galaxy in our Local Group of about 50 galaxies. The other two are M31 (the largest) and our own Milky Way Galaxy (in the middle for size). #astronomy
M33 is the third large spiral galaxy in our Local Group of about 50 galaxies. The other two are M31 (the largest) and our own Milky Way Galaxy (in the middle for size). #astronomy
October 23, 2025 at 10:02 PM
M33 is a spiral galaxy located about 3.2 Mly away in the constellation of Triangulum.
M33 is the third large spiral galaxy in our Local Group of about 50 galaxies. The other two are M31 (the largest) and our own Milky Way Galaxy (in the middle for size). #astronomy
M33 is the third large spiral galaxy in our Local Group of about 50 galaxies. The other two are M31 (the largest) and our own Milky Way Galaxy (in the middle for size). #astronomy
M63 is a spiral galaxy located about 29 Mly away in the constellation Canes Venatici.
Though classified as a spiral galaxy, invisible light its spiral arms are difficult to discern and it is often called a flocculent spiral as a result. #astronomy
Though classified as a spiral galaxy, invisible light its spiral arms are difficult to discern and it is often called a flocculent spiral as a result. #astronomy
October 22, 2025 at 11:30 PM
M63 is a spiral galaxy located about 29 Mly away in the constellation Canes Venatici.
Though classified as a spiral galaxy, invisible light its spiral arms are difficult to discern and it is often called a flocculent spiral as a result. #astronomy
Though classified as a spiral galaxy, invisible light its spiral arms are difficult to discern and it is often called a flocculent spiral as a result. #astronomy
M110 is a dwarf elliptical galaxy located about 2.7 Mly away in the constellation of Andromeda.
This, the last object in Messier's list of non-comet fuzzy objects, is a satellite galaxy of M31 - the Andromeda galaxy. #astronomy
This, the last object in Messier's list of non-comet fuzzy objects, is a satellite galaxy of M31 - the Andromeda galaxy. #astronomy
October 21, 2025 at 11:13 PM
M110 is a dwarf elliptical galaxy located about 2.7 Mly away in the constellation of Andromeda.
This, the last object in Messier's list of non-comet fuzzy objects, is a satellite galaxy of M31 - the Andromeda galaxy. #astronomy
This, the last object in Messier's list of non-comet fuzzy objects, is a satellite galaxy of M31 - the Andromeda galaxy. #astronomy
NGC 7000, the North America Nebula, is an emission nebula located about 2600 ly away in the constellation of Cygnus.
The shape of the nebula is due to a dark nebula between us and the emission nebula. #astronomy
The shape of the nebula is due to a dark nebula between us and the emission nebula. #astronomy
October 21, 2025 at 5:05 AM
NGC 7000, the North America Nebula, is an emission nebula located about 2600 ly away in the constellation of Cygnus.
The shape of the nebula is due to a dark nebula between us and the emission nebula. #astronomy
The shape of the nebula is due to a dark nebula between us and the emission nebula. #astronomy
M76, The Little Dumbbell Nebula, is a planetary nebula located about 2500 ly away in the constellation of Perseus.
A bipolar PN, it is not round. It is also one of the faintest objects on Messier's list of non-comet fuzzy objects. #astronomy
A bipolar PN, it is not round. It is also one of the faintest objects on Messier's list of non-comet fuzzy objects. #astronomy
October 17, 2025 at 3:46 AM
M76, The Little Dumbbell Nebula, is a planetary nebula located about 2500 ly away in the constellation of Perseus.
A bipolar PN, it is not round. It is also one of the faintest objects on Messier's list of non-comet fuzzy objects. #astronomy
A bipolar PN, it is not round. It is also one of the faintest objects on Messier's list of non-comet fuzzy objects. #astronomy
Venus is the second planet from the Sun in our solar system.
Since it is an inferior planet, that is closer to the Sun than the Earth, it has phases as it orbits the Sun.
Bouncing radio waves off Venus allowed us to figure out how far the Sun was away from the Earth. #astronomy
Since it is an inferior planet, that is closer to the Sun than the Earth, it has phases as it orbits the Sun.
Bouncing radio waves off Venus allowed us to figure out how far the Sun was away from the Earth. #astronomy
October 16, 2025 at 1:56 AM
Venus is the second planet from the Sun in our solar system.
Since it is an inferior planet, that is closer to the Sun than the Earth, it has phases as it orbits the Sun.
Bouncing radio waves off Venus allowed us to figure out how far the Sun was away from the Earth. #astronomy
Since it is an inferior planet, that is closer to the Sun than the Earth, it has phases as it orbits the Sun.
Bouncing radio waves off Venus allowed us to figure out how far the Sun was away from the Earth. #astronomy
An easy find. 🙂
October 15, 2025 at 2:32 AM
An easy find. 🙂
M29 is an open cluster located about 5200 ly away in the constellation of Cygnus.
The cluster has about 50 members, though it is difficult to tell for sure due to large amounts of interstellar dust between us and M29. #astronomy
The cluster has about 50 members, though it is difficult to tell for sure due to large amounts of interstellar dust between us and M29. #astronomy
October 14, 2025 at 10:39 PM
M29 is an open cluster located about 5200 ly away in the constellation of Cygnus.
The cluster has about 50 members, though it is difficult to tell for sure due to large amounts of interstellar dust between us and M29. #astronomy
The cluster has about 50 members, though it is difficult to tell for sure due to large amounts of interstellar dust between us and M29. #astronomy
M20, The Trifid Nebula, is an HII region located about 4100 ly away in the constellation of Saggitarius.
An HII region is a cloud of gas and dust with large amounts of ionized hydrogen gas. Stars are often formed in regions like this.
An HII region is a cloud of gas and dust with large amounts of ionized hydrogen gas. Stars are often formed in regions like this.
October 9, 2025 at 10:47 PM
M20, The Trifid Nebula, is an HII region located about 4100 ly away in the constellation of Saggitarius.
An HII region is a cloud of gas and dust with large amounts of ionized hydrogen gas. Stars are often formed in regions like this.
An HII region is a cloud of gas and dust with large amounts of ionized hydrogen gas. Stars are often formed in regions like this.
NGC 3593 is a lenticular galaxy located about 21 Mly away in the constellation Leo.
Studies have shown it to have two stellar populations in its disk, one of the populations orbits retrograde (backwards) to the other. This is possibly due to a merger with another galaxy. #astronomy
Studies have shown it to have two stellar populations in its disk, one of the populations orbits retrograde (backwards) to the other. This is possibly due to a merger with another galaxy. #astronomy
October 9, 2025 at 12:27 AM
NGC 3593 is a lenticular galaxy located about 21 Mly away in the constellation Leo.
Studies have shown it to have two stellar populations in its disk, one of the populations orbits retrograde (backwards) to the other. This is possibly due to a merger with another galaxy. #astronomy
Studies have shown it to have two stellar populations in its disk, one of the populations orbits retrograde (backwards) to the other. This is possibly due to a merger with another galaxy. #astronomy
NGC 2371 is a planetary nebula located about 4400 ly away in the constellation of Gemini.
It is a bipolar planetary nebula, that is isn't round but has two lobes of matter on either side of the central star. #astronomy
It is a bipolar planetary nebula, that is isn't round but has two lobes of matter on either side of the central star. #astronomy
October 8, 2025 at 1:07 AM
NGC 2371 is a planetary nebula located about 4400 ly away in the constellation of Gemini.
It is a bipolar planetary nebula, that is isn't round but has two lobes of matter on either side of the central star. #astronomy
It is a bipolar planetary nebula, that is isn't round but has two lobes of matter on either side of the central star. #astronomy
NGC 3389 (galaxy lower left in the triangle of galaxies) is a spiral galaxy located about 72 Mly away in the constellation of Leo.
It is considerably further away than NGC 3384 and M105, the other two galaxies which are 35 Mly and 37 Mly away respectively. #astronomy
It is considerably further away than NGC 3384 and M105, the other two galaxies which are 35 Mly and 37 Mly away respectively. #astronomy
October 6, 2025 at 10:18 PM
NGC 3389 (galaxy lower left in the triangle of galaxies) is a spiral galaxy located about 72 Mly away in the constellation of Leo.
It is considerably further away than NGC 3384 and M105, the other two galaxies which are 35 Mly and 37 Mly away respectively. #astronomy
It is considerably further away than NGC 3384 and M105, the other two galaxies which are 35 Mly and 37 Mly away respectively. #astronomy
M2 is a globular cluster located about 55 kly away in the constellation of Aquarius.
M2 is one of the larger globular clusters orbiting our galaxy being about 175 light years in diameter and contains about 150000 stars. #astronomy
M2 is one of the larger globular clusters orbiting our galaxy being about 175 light years in diameter and contains about 150000 stars. #astronomy
October 1, 2025 at 11:23 PM
M2 is a globular cluster located about 55 kly away in the constellation of Aquarius.
M2 is one of the larger globular clusters orbiting our galaxy being about 175 light years in diameter and contains about 150000 stars. #astronomy
M2 is one of the larger globular clusters orbiting our galaxy being about 175 light years in diameter and contains about 150000 stars. #astronomy